平均 各科前名次 % (15463)

O2{=AVERAGE(IF(LARGE((C$1:L$1=N2)*C$2:L$20,(COUNTA(B:B)-1)*Q$2)<=(C$1:L$1=N2)*C$2:L$20,(C$1:L$1=N2)*C$2:L$20))



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